Teaching is one of the most outstanding abilities of computers for learners, students, or professionals. It is a box full of knowledge and skills and high-quality educational content.
You can use many websites to learn new things on the computer through online courses, including video-sharing platforms, like youtube.com. Many professionals and experts on these platforms provide much educational practical content to their users.
Learning a foreign language can be more helpful, fun, and, most importantly, effective. Learning new languages face to face with someone on the computer through microphones and speakers is a much better alternative to language learning from a regular notebook.

The e-teacher will be able to assess the correctness of your speech through a computer!. Moreover, there are many universities, education institutes that offer free online learning courses. People are learning new languages, programming, personal development, etc., on the Internet these days.
The invention of the Internet, along with the computer, is the all-time greatest invention.